Timer function to free you from tedious operation.
Easy to read backlit LCD display.
Shutter Release Timer Remote Control could use as a normal shutter control when without battery. But the timing function can NOT work when without the battery in it(Batteries NOT include).
Power source: Two AAA-type batteries (2XAAA Batteries not included)
Length of cord: 120 cm (3.9 ft. approx.)
Sony A7, A7 II, A7R, A7R II, A7S, A3000, A5000, A5100, A6000, A58, NEX-3N, HX50V, HX90V, HX300, HX400, HX400V, DSC-RX1, RX10 II, RX100 II, RX100 III, RX100 IV.